What is a Fuel Pressure Regulator?

[john_trickle]

EFI fuel pressure regulators come in various shapes and sizes but all have the same purpose - to maintain a constant fuel pressure above the intake manifold pressure. The difference in pressure between the fuel rail and intake manifold or differential pressure across the injector should be maintained at a level to suit optimum injector operation.

When do I need to install a Fuel Pressure Regulator?

If you're planning to use larger, aftermarket injectors, it's a good idea to invest in an aftermarket Fuel Pressure Regulator. The installation of an aftermarket FPR allows for the adjustment of fuel pressure to suit aftermarket injectors and other engine modifications. They are also necessary to regulate and flow increased volumes of fuel pumped by high flow aftermarket fuel pumps

What to look for when buying a Fuel Pressure Regulator?

Since the FPR's main job is to maintain an optimum fuel pressure, you should always look for an FPR that can maintain a stable and consistent fuel pressure delivery. Other things to look for are flow capacity, spring and diaphragm design and compatibility with all commonly used fuel line fittings. or alcohol.

JOHN_TRICKLE
Daewoo Lanos 1.5L SOHC, TD04L @ 7psi